1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45f4686efbe0e4abb52e62d0468b08d912256d37f6d58bab8ed1f720225e66c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52c4a93b-57b3-458a-afcf-391a59791131.json and https://artists.proofprofile.net/proofs/artist/52c4a93b-57b3-458a-afcf-391a59791131.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121802512aa50022b7f01ff4701fb9f37239974f8264b355c56fe9162246ceb2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGE2221004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d994482e2ec53fb48e5f4ee6b495cdc17b0e3b327b00a46762f2bbc7cc69b4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGB2272521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ee0f2c32ec70adafd6541d67e804ac89c5a7d379f4b265291a885dfbc80fb3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFU2162808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0373b307694719d8861d39b0840718a31796ca41cafc0d8f5cfe54e88440c621. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFT2171847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7265949739a3f9afe9b93ed69220e2f160b087e8303a30df167d24e1d77625f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFN2164548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab402bd76c59c8b4a3c873d97e13e2f0fc496abec923c7278ad2384fe3ec125. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFN2113556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505838fc8e9b3d0bc1fec5296ed3074df51c63ec1279312ac55363ce83c0cbaa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFM2191552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad74b3a1e776cce9e849337c9b9ad0af92085befde737860e4b0ae7aace05038. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFM2142562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbad7836fa9a189ec6bfbbc9c23193081f5e5bb6652c75d3f08c5a60f4493cc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFK2116077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7641b9e7cdcb24736605a408322985b40df78810cc70c8546c67461769da646a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFG2055482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236a79603747420ae4444e8ee7dfacc2ecc456e92389cfbe447577f2b45e3d29. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFF2072785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e811cde6668db96755d784adcc21eed2c79ae75fec53018b7a94f8a45daee2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFC2090166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb470037bc98b5700d011fb0889322b567bc54f34fd6181f83d64015e16ec41df. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2005268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3073680aba6f443325e5ad35986a3be7d0b8323d368200dce54018f5cf0d54. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEU2034383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d8e2a928349dade8bacb07c13bc2af4bd57e9e96205b05ce4224f3ab189ba6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEQ2031258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf624a9dbe969da38259bbf5e7f035288d33313c4df9289f21c97badd629aa314. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEN1985738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e37167d8324b803b830b2d0e5062bff08edd8972f4ab3ebe4ffcd96ec3ffc64. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1936892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d490350546cd0230d5098c7e070d26f441fbbf7ee189cb2c9f0313ccc2e16e6. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEL1923113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e59e7080a873e02e160795b4cd6c0910502abb909716ec582f99a66dac2942. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEK1973267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0141ac9084c79daed954a17c57a1ed7d8fe16a7d5fc2d739bf8f0ce3c863a30c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEK1941103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc488e3e212a2edc21c681a27c3b32767b5406f029574578c4cf656f6f6f648d0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEF1912859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d593688d1898f975bb96d23c7b0284ce1b59f9daf66e0f0e01896456e19f2d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEB1965860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6f0e9b3b11120a4c21f417bcf67790ca95b775dd169ad9b51fa3c2f48a5996. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADL1825454.